Complicated test setups

[lukewells]

A WPC95 board setup for tracing out an issue with distortion and a high DC offset

As you can see lots of wiring to get the psu's setup right, all commoned to ground, with floating psu configured for +/- 15v with the centre point referenced to ground.









High Speed 2 Accelerator PCB with coil firing issues.

Master PSU reconfigured to series to allow for +50v, commoned to second psu, plus commend to the videogame tester to allow for logic tracing.

Digital DC load configured in resistance mode to simulate a pinball coil and provide the correct load on the accelerator drive transistors

 

[windoesnot]

My brain hurts!

 

[Sgt GrizZ]

Holy sh*t......!?! .... are you fixing a pin or putting a man on Mars?

 

[DRD]

No comprendez

 

[Spandangler]

My head just turned into pink mist. Fair play Luke. We need you

 

[cooldan]

i like pizza

 

[RudeDogg1]

I love lamp

 

[Nedreud]

OMG. My test setup feels SO inadequate I was feeling pretty clever using an old slimline computer power supply to give +5VDC and +12VDC to test old Bally boards, but these photos give me serious PSU envy

Lovin' the Acorn monitor too

 

[lukewells]

OMG. My test setup feels SO inadequate I was feeling pretty clever using an old slimline computer power supply to give +5VDC and +12VDC to test old Bally boards, but these photos give me serious PSU envy

Lovin' the Acorn monitor too

We all start out like that, at one point I used an old PC power supply too , but when you are doing daily testing, you quickly realise that the ability to have up to 5-8 independant voltages becomes necessary, plus the ability to do split rails etc for more complex stuff, as well as parallel for high current and series for high voltage. It took me years to get those 2 programmable psu's, but now I have them, I don't know how I coped before! Plus they are the must fun psu's ever to play with

 

[replicas]

So, anyone needing board repair you now know if you didn't already, we're to send to .

 

[windoesnot]

Plus I'll gladly vouch for how good Lukes work is, he's a chuffin genius! Makes the rest of us look like a bunch of uneducated monkeys!

 

[RudeDogg1]

Agreed

 

[Nedreud]

Plus they are the must fun psu's ever to play with

There aren't many of us on the planet that would describe using a PSU as "fun" but I know where you're coming from
We know we're sad but we so happy in wrapped up in our little nerd bubbles we just don't care

 

[abaxas]

Bonus points to the first person to answer "why is it earth/ground referenced ?"......

 

[windoesnot]

Because Luke doesn't fancy killing himself?